On Error Message Vba
Contents |
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers vba error handling best practices or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x
On Error Goto Vba
Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it try catch vba only takes a minute: Sign up VBA: How to display an error message just like the standard error message which has a “Debug” button? up vote 12 down vote favorite 5 As usual, I create an error-handler using On
Vba On Error Exit Sub
Error Goto statement, there I put a few lines of cleaning codes and display the error message, but now I don't want to lose the comfortableness of the default handler which also point me to the exact line where the error has occured. How can I do that? Thanks in advance. excel vba scripting excel-vba ms-office share|improve this question asked Oct 12 '10 at 5:43 Vantomex 1,60431319 Just to keep the proper links ... this question continues here: on error goto line stackoverflow.com/questions/3929997/… –Dr. belisarius Oct 16 '10 at 0:27 add a comment| 3 Answers 3 active oldest votes up vote 30 down vote accepted First the good news. This code does what you want (please note the "line numbers") Sub a() 10: On Error GoTo ErrorHandler 20: DivisionByZero = 1 / 0 30: Exit Sub ErrorHandler: 41: If Err.Number <> 0 Then 42: Msg = "Error # " & Str(Err.Number) & " was generated by " _ & Err.Source & Chr(13) & "Error Line: " & Erl & Chr(13) & Err.Description 43: MsgBox Msg, , "Error", Err.HelpFile, Err.HelpContext 44: End If 50: Resume Next 60: End Sub When it runs, the expected MsgBox is shown: And now the bad news: Line numbers are a residue of old versions of Basic. The programming environment usually took charge of inserting and updating them. In VBA and other "modern" versions, this functionality is lost. However, Here there are several alternatives for "automatically" add line numbers, saving you the tedious task of typing them ... but all of them seem more or less cumbersome ... or commercial. HTH! share|improve this answer edited Oct 12 '10 at 13:27 answered Oct 12 '10 at 13:13 Dr. belisarius 51.3k1190164 MZTools can add/remove line numbers & its free –Charles Williams Oct 12 '10 at 14:56 @Charles yep. That is one of the references in the page I cited. Tnx! –Dr. belisarius Oct 1
generally put more focus on the coding part and getting the desired result but during this process we forget an important thing i.e. Error handling. Error handling
Vba On Error Goto 0
is an important part of every code and VBA On Error Statement is
Vba Error Handling In Loop
an easy way for handling unexpected exceptions in Excel Macros. A well written macro is one that includes proper exception err.number vba handling routines to catch and tackle every possible error. Error handling is important because in case of any unexpected exceptions your code doesn’t break. Even if any fatal unexpected error occurs in the http://stackoverflow.com/questions/3911973/vba-how-to-display-an-error-message-just-like-the-standard-error-message-which code then also you should ensure that the code should terminate gracefully. Definition of VBA On Error Statement: On Error statement instructs VBA Compiler, what to do in case any runtime exception are thrown. Syntax of On Error Statement: Basically there are three types of On Error statement: On Error Goto 0 On Error Resume Next On Error Goto
three flavors: compiler errors such as undeclared variables that prevent your code from compiling; user data entry error such as a user http://www.cpearson.com/excel/errorhandling.htm entering a negative value where only a positive number is acceptable; and http://www.techrepublic.com/blog/five-apps/five-tips-for-handling-errors-in-vba/ run time errors, that occur when VBA cannot correctly execute a program statement. We will concern ourselves here only with run time errors. Typical run time errors include attempting to access a non-existent worksheet or workbook, or attempting to divide by zero. The example code in on error this article will use the division by zero error (Error 11) when we want to deliberately raise an error. Your application should make as many checks as possible during initialization to ensure that run time errors do not occur later. In Excel, this includes ensuring that required workbooks and worksheets are present and that required names are defined. on error goto The more checking you do before the real work of your application begins, the more stable your application will be. It is far better to detect potential error situations when your application starts up before data is change than to wait until later to encounter an error situation. If you have no error handling code and a run time error occurs, VBA will display its standard run time error dialog box. While this may be acceptable, even desirable, in a development environment, it is not acceptable to the end user in a production environment. The goal of well designed error handling code is to anticipate potential errors, and correct them at run time or to terminate code execution in a controlled, graceful method. Your goal should be to prevent unhandled errors from arising. A note on terminology: Throughout this article, the term procedure should be taken to mean a Sub, Function, or Property procedure, and the term exit statement should be taken to mean Exit Sub, Exit Function, or Exit Property. The
United States Australia United Kingdom Japan Newsletters Forums Resource Library Tech Pro Free Trial Membership Membership My Profile People Subscriptions My stuff Preferences Send a message Log Out TechRepublic Search GO Topics: CXO Cloud Big Data Security Innovation Software Data Centers Networking Startups Tech & Work All Topics Sections: Photos Videos All Writers Newsletters Forums Resource Library Tech Pro Free Trial Editions: US United States Australia United Kingdom Japan Membership Membership My Profile People Subscriptions My stuff Preferences Send a message Log Out Software Five tips for handling errors in VBA Effective error handling can mean the difference between a seamless, user-friendly experience and a problem-plagued application. These best practices will help ensure your apps run as intended, without a hitch. By Susan Harkins | in Five Apps, October 9, 2010, 1:15 AM PST RSS Comments Facebook Linkedin Twitter More Email Print Reddit Delicious Digg Pinterest Stumbleupon Google Plus A professional application always includes adequate error-handling routines to trap unexpected errors. Sometimes, the right handling means the user never knows the error occurred. At the very least, error-handling routines should address the problem, share adequate information on what the user should do next, and exit the program (if absolutely necessary) gracefully. You put a lot of effort into writing the procedures that run your custom applications. Why let a runtime error ruin it all? By employing a few best practices, you can improve error handling. 1: Verify and configure error settings Before you do anything, check the error-trapping settings. VBA, via the Visual Basic Editor (VBE), is flexible and allows you to determine how it responds to errors. To access these settings (shown in Figure A), in the VBE, choose Options from the Tools menu, and click the Ge